* {
  padding: 0;
  margin: 0;
}
div,
h6,
h5,
h4,
h3,
h2,
h1,
a,
form,
input,
ul,
li,
span {
  display: block;
  box-sizing: border-box;
}
ul {
  list-style: none;
}
a {
  color: #666;
  text-decoration: none;
}
